Box counting method was applied to investigate the fractal structure and the fractal dimension for soybased and dairy yoghurt was determined to be 1.9105 and 1.9268 respectively.

• 并应用计盒维数法的基本原理考察了大豆酸奶和酸牛奶是否具有以自相似性为特征的分形结构；最终确定豆浆酸奶和酸牛奶的分形维数分别为1.；9105、1